This is a user setting which can be set on the Virtual Hub
The setting prevents storing the password on the client to allow automatic login.

Using the Server Manager tool, connect to the hub and press Manage Virtual Hub -> Manage Users .
Choose ( highlight) the user you would like to manage and press Edit.
In the upper right hand corner, check Set Security Policy, then press Security Policy.
Scroll down and enable Disallow Password Save in VPN Client.